A thin-walled catheter of the type having a distal end adapted to be formed into a curve and guided through branching blood vessels or the like is provided with a two-layered tubular body portion having a rigid inner sheath and a flexible outer sheath, which may be radiopaque. The catheter exhibits excellent torque response and control while being especially thin-walled, thereby permitting minimization of the outer diameter size while providing excellent liquid flow rates therethrough and excellent strength properties. The tip portion is fuseless with respect to the rest of the catheter, the tip portion being an integral extension of the flexible outer sheath that is formed over a gap between lengths of the rigid inner sheath.

Patent
   4596563
Priority
Jun 09 1983
Filed
Mar 08 1984
Issued
Jun 24 1986
Expiry
Jun 24 2003
Assg.orig
Entity
Large
238
19
all paid
1. A fuseless catheter having a distal end adapted to be formed into a curve and guided through blood vessels, comprising:
an elongated two-layered tubular member and a single-layered fuseless flexible atraumatic tip portion at the distal end of said elongated tubular member;
said elongated tubular member having an inner, rigid polymer elongated cylindrical sheath that includes a longitudinal, generally axial, inner bore therethrough;
said elongated tubular member further includes an outer, flexible polymer elongated sheath closely overlying said inner, rigid polymer elongated cylindrical sheath;
the longitudinal, generally axial bore of the inner, rigid polymer sheath is generally coextensive with an inner bore through said atraumatic tip portion;
said fuseless flexible atraumatic tip portion is an integral extension of, is made of the same flexible polymer as, and was extruded continuously with said outer, flexible polymer elongated sheath, said tip portion extending beyond said inner, rigid polymer sheath; and
said inner, rigid polymer elongated cylindrical sheath is adhered to said outer, flexible polymer elongated sheath.
8. A fuseless catheter having a distal end adapted to be formed into a curve and guided through blood vessels, comprising:
an elongated two-layered tubular member and a single-layered fuseless flexible atraumatic tip portion at the distal end of said elongated tubular member;
said elongated tubular member having an inner, rigid polymer elongated cylindrical sheath that includes a longitudinal, generally axial, inner bore therethrough;
said elongated tubular member further includes an outer, flexible polymer elongated sheath closely overlying said inner, rigid polymer elongated cylindrical sheath;
the longitudinal, generally axial bore of the inner, rigid polymer sheath is generally coextensive with an inner bore through said atraumatic tip portion;
said fuseless flexible atraumatic tip portion is an integral extension of, is made of the same flexible polymer as, and was extruded continuously with said outer, flexible polymer elongated sheath, said tip portion extending beyond said inner, rigid polymer sheath; and
said outer flexible polymer elongated sheath was formed by extrusion of the flexible polymer over said rigid polymer elongated cylindrical sheath and said atraumatic tip portion was formed by continuation of said extrusion of the flexible polymer through a longitudinal gap in said rigid polymer elongated cylindrical sheath.
2. The catheter according to claim 1, wherein said outer, flexible polymer elongated sheath and said tip portion comprises a continuous polyurethane sheath, and wherein said inner, rigid polymer elongated sheath is a polycarbonate sheath.
3. The catheter according to claim 1, wherein a hub member is secured to the proximal end of the elongated tubular member.
4. The catheter according to claim 1, wherein said elongated tubular member and said tip portion are radiopaque.
5. The catheter according to claim 1, wherein said outer elongated sheath is radiopaque.
6. The catheter according to claim 1, wherein said rigid polymer inner sheath is highly compatible with said flexible polymer outer sheath.
7. The catheter according to claim 1, wherein said rigid polymer inner sheath and said flexible polymer outer sheath are laminated together.
9. The catheter according to claim 1, wherein said inner rigid sheath is a polymeric material selected from the group consisting of polycarbonates, hard polyesters, hard polyurethanes, polyamides, high density polyethylenes and the like, and wherein said outer flexible sheath and tip portion are made of a polymeric material selected from the group consisting of soft polyurethanes, soft polyesters, low density polyethylenes and the like.
10. The catheter according to claim 1, wherein said inner rigid sheath has a hardness between approximately Shore D75 and Shore D85, and wherein said flexible sheath and tip have a hardness between approximately Shore D40 and Shore D60.

This is a continuation-in-part of application Ser. No. 502,526, filed June 9, 1983 now abandoned.

The present invention generally relates to a thin-walled catheter and method for making same, and more particularly, to a catheter that is thin-walled while still exhibiting excellent strength and torque response characteristics, the thin-walled construction being one in which a thin flexible outer sheath overlies a thin rigid inner sheath to thereby form the elongated tubular portion of the catheter. The catheter further includes a flexible, atraumatic tip portion located at one end of the elongated tubular member and that is a fuseless, integral extension of the flexible outer sheath that is formed at a gap between lengths of the rigid inner sheath.

Catheters such as intravascular catheters are well known for use in diagnostic and therapeutic applications wherein it is necessary to administer a fluid to, or otherwise contact, a precise location within the cardiovascular system, for example, by guiding the tip or distal end of the catheter through branching blood vessels. Such guiding is accomplished in part by manipulation of a proximal portion of the catheter in order to impart forces needed to curve and guide the catheter through the curving and branching blood vessels.

Because these types of catheters are used in an intravascular manner, they must have an extremely small outside diameter. Inasmuch as such catheters typically come into contact with living tissue, including organs such as the heart, it is extremely important that the catheter be in place for a minimal length of time. The overall insertion time includes the length of time needed to transmit the therapeutic or diagnostic fluid through the length of the catheter. This flow velocity is dependent upon the internal diameter of the catheter, as well as the strength of the catheter which limits the pressure that can be applied in order to transmit the fluid therethrough. It is also important that these catheters be very resistant to the formation of kinks therein which requires a certain degree of stiffness, while at the same time possessing adequate flexibility to be responsive to maneuvering forces and to be as atraumatic as possible.

Catheters that require a relatively stiff inner lumen can advantageously utilize these properties. Included are intravascular catheters, guiding catheters through which balloon catheters for angioplasty techniques and the like can be passed, and sheaths where wall thinness and strength are particularly important.

The present invention provides a catheter that has an elongated tubular portion having an internal layer that is a rigid layer which exhibits strength and stiffness properties that are extremely advantageous for an intravascular catheter or the like while still having adequate flexibility in its thin-walled sheath condition to permit the flexibility required of such a catheter. Closely overlying, and typically extruded onto, the rigid inner sheath is a flexible outer sheath that is compatible with the rigid inner sheath and that, as a layer over the rigid inner sheath, imparts improved atraumatic properties to the catheter and contributes to the overall flexibility of the unitary device, while also providing convenient opportunities to impart radiopaque properties to the catheter. These catheters, which are preferably produced by extrusion techniques including coextrusion when appropriate, have a flexible tip portion that is a fuseless, integral extension of the flexible outer sheath.

By this combination, it has been discovered that the advantages of a multi-walled catheter are achieved while at the same time providing a fuselessly tipped catheter that has the thin-walled properties often associated with catheters having single-layered walls, including the atraumatic and flexibility attributes normally associated therewith.

Accordingly, a general object of the present invention is to provide an improved fuselessly tipped thin-walled catheter.

Another object of the present invention is to provide a thin-walled catheter that is especially suitable for highly delicate treatments and diagnostic procedures including coronary angiography, angioplasty, ventricular and aortic flush injections, and other similar procedures within the cardiovascular system.

Another object of the present invention is to provide an improved thin-walled catheter and method of making same which utilizes a polycarbonate material as a thin-walled extrusion having flexibility suitable for intravascular catheters and the like, while still retaining its highly advantageous strength properties.

Another object of this invention is an improved method for forming a thin-walled catheter which includes fuselessly forming a tip portion that is integral with an outer flexible sheath and that is extruded over a gap in an inner rigid sheath.

Another object of the present invention is to provide an improved thin-walled catheter that has an inner layer and an outer layer of extruded material and that does not require adding any strands of strengthening material therebetween.

Another object of the present invention is the utilization of a polycarbonate material in a thin-walled form within the elongated tubular member of a catheter such as an intravascular catheter.

Another object of the present invention is to provide an improved intravenous catheter and method of producing same with a flexible, atraumatic fuseless tip that has high visibility under flouroscopy.

Another object of the present invention is to provided an improved intravascular catheter that exhibits excellent torque response or control and that is particularly resistant to kinking, while still possessing the atraumatic properties needed for an intravascular catheter.

These and other objects, features and advantages of the present invention will be clearly understood through a consideration of the following detailed description.

In the course of this description, reference will be made to the attached drawings, wherein:

FIG. 1 is an elevational view, partially broken away, of a typical catheter of the intravascular type incorporating the present invention;

FIG. 2 is a partial, longitudinal cross-section, further broken away, of the catheter illustrated in FIG. 1;

FIG. 3 is a perspective view illustrating an extruded rigid inner sheath according to this invention and a tip-accommodating gap therein; and

FIG. 4 is a perspective view illustrating the extrusion of the flexible polymer outer sheath over the rigid inner sheath illustrated in FIG. 3 and over the gap to form a fuseless flexible tip.

FIG. 1 provides an illustration of the type of catheter, generally designated as 21, within which this invention is utilized, the illustrated catheter 21 being an intravascular catheter. Catheter 21 includes an elongated tubular member or body 22, a fuseless tip portion 23, and a hub member 24. A longitudinal bore 25 extends throughout the elongated tubular member 22 and the hub member 24, terminating in a distal orifice 26, which is the location at which, for example, diagnoses are made or therapeutic fluids are administered.

The elongated tubular member or body 22 includes a rigid inner sheath 27 and a flexible outer sheath 28. Each sheath 27 and 28 is extremely thin-walled to the extent that the elongated tubular member or body 22 is itself thin-walled in order to provide the bore 25 with a particularly large diameter in relation to the outer diameter of the elongated tubular member or body 22.

Rigid inner sheath 27 is an extrusion grade polymeric cylinder that had been formed by extrusion, preferably onto a precision mandrel 29, which is typically a silver wire or the like. This is illustrated generally in FIG. 3, depicting an outlet die 31 of an extruder. The rigid inner sheath 27 may be made of a rigid polymeric material such as polycarbonate, hard polyesters, hard polyurethanes, hard polyamides or nylons, high density polyethylene, or the like. Typically, such rigid polymeric materials will have a hardness between approximately Shore D75 and Shore D85. Polycarbonate is the preferred material out of which the rigid inner sheath 27 is made.

Flexible outer sheath 28 is a polymeric material that had been extruded as a sheath over the inner sheath 27. FIG. 4 depicts this flexible outer sheath eminating from an outlet die 32 of an extrusion molding device. The flexible outer sheath 28 may be made of a flexible polymeric material such as soft polyurethanes, soft polyester, low density polyethylene, or the like. Typically, such flexible polymeric materials will have a hardness between approximately Shore D40 and Shore D60. Polyurethane is the preferred material out of which the flexible outer sheath 28 is made.

Tip portion 23 is designed to minimize intimal trauma. It is extruded integrally with and made of the same polymeric material as the flexible outer sheath 28, whereby the tip portion 23 is a fuseless continuation and extension of the flexible outer sheath 28.

Because the tip portion 23 excludes the rigid, stiffening polymeric sheath 27, this results in a tip portion 23 that is particularly movable, flexible and atraumatic. Tip portion 23 is an integral extension of the flexible outer sheath 28, and it will take the shape needed for the particular catheter, including a generally straight configuration as illustrated in FIG. 1, so-called pigtail shaped curves, and specially designed curves for particular uses such as visceral curves and cerebral curves. Tip portion 23 may include openings other than the distal orifice 26. The particular shape of the tip portion 23 is formed by a suitable procedure, such as immersing the tip portion 23 in boiling water while bent as desired before removal of the precision mandrel 29.

The tip portion 23 is provided as an integral extension of the flexible outer polymeric sheath 28, and such is accomplished by extruding the flexible outer sheath 28 and the tip portion 23 together, the sheath portion 28 thereof being extruded over the rigid inner sheath 27, and the tip portion thereof being extruded directly onto the precision mandrel 29. A particularly advantageous manner of accomplishing this is as follows.

The rigid inner sheath 27, which is extruded onto the precision mandrel 29, is modified so as to impart a gap substantially equal to the length of the desired tip member, to thereby form a series of intermittent gaps between lengths of rigid polymer inner sheath on the precision mandrel 29, which lengths are the same as those desired for the body portions 22 of the particular catheters being produced. A layer of flexible polymer is extruded over the thus formed rigid polymer lengths and intermittent gaps therebetween in order to thereby extrude the flexible polymer material as an integral length that alternately overlies the rigid polymer inner sheath 27 and the precision mandrel 29. The portion of this flexible polymer extrusion that overlies the rigid polymer inner sheath 27 completes the formation of the elongated tubular member or body 22, while the portion of this flexible polymer extrusion that overlies the precision mandrel 29 forms the tip portion 23.

Each length of flexible polymer is subsequently severed at or near one end of the gap length, such as along line A--A of FIG. 4, in order to thereby provide an elongated tubular member 22 having a rigid polymer inner sheath 27 and a flexible polymer outer extrusion that extends beyond the rigid inner sheath 27 for a distance needed to provide the desired tip portion 23. This procedure eliminates the need for a separate bonding step and assures a smooth interface between the tip portion 23 and the body 22.

With more particular reference to the modification of the rigid polymer inner sheath so as to impart a plurality of gaps having a length substantially equal to the length of the desired tip member, two different general approaches may be taken. One includes removal of extruded rigid polymer and the other includes extruding the rigid polymer in an intermittent manner.

When proceeding by the removal approach, the rigid polymer coating or sheath is extruded continuously over the mandrel 29. Thereafter, the rigid polymer coating is removed from the mandrel 29 at predetermined gap lengths 33 (FIG. 3). Removal is effected in any convenient manner, including mechanical cutting, solvent dissolving, and ultrasonic removal (typically preceded by freezing). When proceeding by the intermittent extrusion approach, extrusion of the rigid inner coating proceeds until the needed length of body 22 has been coated onto the mandrel 29, at which time this extruding is interrupted or stopped while the mandrel 29 proceeds to move beyond the outlet die 31 in order to form a gap 33, after which extrusion resumes until another body length of rigid polymer coats the mandrel 29. Whether the removal approach or the intermittent extrusion approach is used, the flexible polymer is then coated over the body lengths and over the gaps, as illustrated in FIG. 4. The intermittent extrusion approach provides a possibility of simultaneous coextrusion of the inner, gapped coating and of the outer continuous coating.

In order to be suitable for use in procedures utilizing radiological techniques, such as those in which intravascular catheters are used, the catheter 21 should be radiopaque. An exemplary manner of imparting this property to the catheter 21 is to utilize a flexible polymer material that includes a radiopaque agent, such as barium sulfate or the like. This approach provides what can be an advantageous feature for many uses, which is that the tip portion 23 will be more visible by radiological techniques than the rest of the catheter 21, which enables the user to more easily focus on manipulations needed to maneuver the tip portion through the cardiovascular system.

When the outer sheath 28 is extruded over the inner sheath 27 as illustrated in FIG. 4, particularly advantageous results are obtained when the inner sheath 27 is in a heated condition, for example between about 300° and 400° F. when the rigid polymer is polycarbonate. Such heating softens the surface of the polycarbonate sheath 27 in order to enhance the combining of the outer sheath 28 with the inner sheath 27 to the extent that they are generally adhered together in order to form a more unitary body 2 that will be especially responsive to torque forces imparted thereto and will exhibit enhanced thin-walled properties.

With reference to the hub member 24, such will typically be joined to the proximal end of the elongated tubular member or body 22 by a suitable material, such as an adhesive or solvent that is a solvent for both materials of the inner and outer sheaths, as well as for the material of the hub member, which is typically a polycarbonate, whereby the respective materials will soften and adhere to each other. Suitable solvents include tetrahydrofuran, methylethylketone, acetone, or the like.

Hub portion 24 is of a structure that is suitable for the catheter use desired. Typically, such a hub portion 24 will be attached to an injector (not shown) to impart a force to the fluids being administered in order to pass same through the bore 25 and out of the distal orifice 26. This hub member 24 may, for example, take the form of a conventional female needle fitting. Also associated with the hub member may be a manipulator device (not shown) of known construction for rotating and/or deflecting the catheter as desired in order to assist in threading the tip portion 23 through branching blood vessels and the like.

An exemplary catheter 21 prepared according to this invention is an intravascular catheter of the "French 5" size that is extruded to a total wall thickness of the elongated tubular member or body 22 of approximately 0.008 inch. The inner sheath 27 layer thereof, if made of polycarbonate, would have a wall thickness range of on the order to about 0.0035 to 0.005 inch, depending upon the strength and stiffness desired. The corresponding wall thickness range of the outer sheath 28, if made of polyurethane, would be between about 0.0045 and 0.003 inch. Intravascular catheters of these dimensions and of the structure according to this invention have a burst pressure of on the order of up to about 1,200 psi or greater.

It will be understood that the embodiments of the present invention which have been described are merely illustrative of a few of the applications of the principles of the present invention. Numerous modifications may be made by those skilled in the art without departing from the true spirit and scope of the invention.

Pande, Gyan S.

Patent Priority Assignee Title
10245352, Jun 30 2006 Abbott Cardiovascular Systems Inc. Catheter shaft having high strength and flexibility
10406329, May 26 2011 ABBOTT CARDIOVASCULAR SYSTEMS INC Through tip for catheter
10413702, Oct 21 2011 Boston Scientific Scimed, Inc. Locking catheter hub
10625048, Sep 01 2016 Terumo Kabushiki Kaisha Introducer sheath
11000670, Apr 28 2003 Cook Medical Technologies LLC Flexible sheath with varying durometer
11103146, Jun 21 2005 ST. JUDE MEDICAL LUXEMBOURG HOLDINGS II S.A.R.L. (“SJM LUX 11”) Wireless sensor for measuring pressure
11103147, Jun 21 2005 ST. JUDE MEDICAL LUXEMBOURG HOLDINGS II S.A.R.L. (“SJM LUX 11”) Method and system for determining a lumen pressure
11179048, Jun 21 2005 ST. JUDE MEDICAL LUXEMBOURG HOLDINGS II S.A.R.L. (“SJM LUX 11”) System for deploying an implant assembly in a vessel
11383070, May 26 2011 Abbott Cardiovascular Systems Inc. Through tip for catheter
11684276, Jun 21 2005 TC1, LLC Implantable wireless pressure sensor
11865334, Aug 21 2017 RASHIDI, MAJID Lead with integrated feature including a low friction component to facilitate extraction and associated methods of extraction
11890082, Jun 21 2005 TC1 LLC System and method for calculating a lumen pressure utilizing sensor calibration parameters
4705510, Dec 18 1984 The Kendall Company Nephrostomy catheter with formed tip
4707337, Aug 11 1986 SORENSEN BIOSCIENCE, INC Medical micro pipette tips for difficult to reach places and related methods
4721680, Aug 11 1986 SORENSEN BIOSCIENCE, INC Methods of using micro pipette tips
4753637, Jul 16 1986 The John Hopkins University Catheter having means for controlling the insertion depth
4840622, Oct 06 1987 Menlo Care, Inc. Kink resistant catheter
4846812, Mar 22 1988 Menlo Care, Inc. Softening catheter
4863442, Aug 14 1987 Medtronic Ave, Inc Soft tip catheter
4886502, Dec 09 1986 THERMEDICS, INC Peritoneal access catheter
4886506, Dec 23 1986 Baxter Travenol Laboratories, Inc. Soft tip catheter
4888146, May 19 1988 Method and apparatus of forming extruded article
4925710, Mar 31 1988 Technology Holding Company II Ultrathin-wall fluoropolymer tube with removable fluoropolymer core
4963306, Jul 14 1988 BOSTON SCIENTIFIC GLENS FALLS CORP Method for making fuseless soft tip angiographic catheter
4985022, Nov 23 1988 COOK INC , A CORP OF INDIANA Catheter having durable and flexible segments
4990138, Jul 18 1989 Edwards Lifesciences Corporation Catheter apparatus, and compositions useful for producing same
4994047, May 06 1988 CARDINAL HEALTH SWITZERLAND 515 GMBH Multi-layer cannula structure
5032343, Aug 11 1986 SORENSEN BIOSCIENCE, INC Method for producing medical micro pipette tips for difficult to reach places
5069674, Nov 23 1988 Medical Engineering and Development Institute, Inc.; MEDICAL ENGINEERING AND DEVELOPMENT INSTITUTE, INC Flexible, kink-resistant catheter
5078702, Mar 25 1988 Advanced Cardiovascular Systems, INC Soft tip catheters
5088991, Jul 14 1988 BOSTON SCIENTIFIC GLENS FALLS CORP Fuseless soft tip angiographic catheter
5152855, Jun 29 1989 Cordis Corporation Method and device for mutual connection of tubes
5199427, Oct 19 1990 INNOVATIVE MEDICAL DEVELOPMENT CORP Multi-layered transtracheal caatheter
5215614, Jun 29 1989 Cordis Corporation Method for manufacturing a catheter
5218957, Oct 19 1990 INNOVATIVE MEDICAL DEVELOPMENT CORP Multi-layered transtracheal catheter
5240537, Jul 01 1991 BOSTON SCIENTIFIC GLENNS FALLS CORP ; BOSTON SCIENTIFIC GLENS FALLS Method for manufacturing a soft tip catheter
5242395, Apr 20 1989 Cook Incorporated Balloon decompression catheter
5269793, Jul 20 1989 Advanced Cardiovascular Systems, INC Guide wire systems for intravascular catheters
5308342, Aug 07 1991 TARGET THERAPEUTICS, A DELAWARE CORPORATION Variable stiffness catheter
5336205, Feb 25 1993 Target Therapeutics, Inc Flow directed catheter
5358493, Feb 18 1993 Boston Scientific Scimed, Inc Vascular access catheter and methods for manufacture thereof
5395341, Mar 21 1994 Cordis Corporation One piece vessel dilator/catheter sheath introducer
5507995, Feb 18 1993 Boston Scientific Scimed, Inc Process for making a catheter
5514108, Sep 01 1994 Cordis Corporation Soft flexible catheter tip for use in angiography
5527276, Jan 01 1993 CANNUFLOW, INC Flexible inflow/outflow cannula
5538512, Feb 25 1993 Target Therapeutics, Inc Lubricious flow directed catheter
5549581, Aug 13 1993 ST JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC Coronary sinus catheter
5569215, Jun 24 1993 Cardiovascular Dynamics, Inc. Low profile infusion catheter
5599319, Sep 01 1994 Cordis Corporation Soft flexible catheter tip for use in angiography
5614136, Mar 02 1995 NILTAR TRADING S A Process to form dimensionally variable tubular members for use in catheter procedures
5658263, May 18 1995 Cordis Corporation Multisegmented guiding catheter for use in medical catheter systems
5667499, Oct 04 1994 Boston Scientific Scimed, Inc Guide catheter unibody
5676659, Nov 12 1993 Medtronic Ave, Inc Small diameter, high torque catheter
5683370, Jun 06 1996 Becton, Dickinson and Company Hard tip over-the-needle catheter and method of manufacturing the same
5704926, Nov 23 1994 Navarre Biomedical, Ltd. Flexible catheter
5722963, Aug 13 1993 ST JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC Coronary sinus catheter
5730733, Jun 01 1995 Boston Scientific Scimed, Inc Flow assisted catheter
5762637, Aug 27 1996 Boston Scientific Scimed, Inc Insert molded catheter tip
5772641, Dec 12 1995 ABBOTT LABORATORIES VASCULAR ENTITLES LIMITED; Abbott Laboratories Vascular Enterprises Limited Overlapping welds for catheter constructions
5792124, Jan 04 1995 Medtronic, Inc. Reinforced catheter which gets softer towards the distal tip
5797877, Oct 01 1993 Boston Scientific Scimed, Inc Medical device balloons containing thermoplastic elastomers
5800409, Jan 12 1993 CANNUFLOW, INC Flexible inflow/outflow cannula
5811043, Jan 04 1995 Medtronic, Inc.; Toyota Jidosha Kabushiki Kaisha Method of soft tip forming
5827242, Jun 21 1996 Medtronic Ave, Inc Reinforced catheter body and method for its fabrication
5836912, Oct 21 1996 SciMed Life Systems, INC; Boston Scientific Scimed, Inc Catheter having nonlinear flow portion
5851203, Sep 22 1993 Cordis Corporation Neuro-microcatheter
5851464, May 13 1996 Cordis Corporation Method of making a fuseless soft tip catheter
5860963, Dec 10 1993 SciMed Life Systems, INC; Boston Scientific Scimed, Inc Guiding catheter
5868718, Mar 02 1995 Boston Scientific Scimed, Inc Process to form dimensionally variable tubular members for use in catheter procedures
5891110, Oct 15 1997 Boston Scientific Scimed, Inc Over-the-wire catheter with improved trackability
5899892, May 31 1996 Boston Scientific Scimed, Inc Catheter having distal fiber braid
5908413, Oct 03 1997 Boston Scientific Scimed, Inc Radiopaque catheter and method of manufacture thereof
5916208, Jun 06 1996 Becton, Dickinson and Company Hard tip over-the-needle catheter and method of manufacturing the same
5947939, Jun 01 1995 Boston Scientific Scimed, Inc Flow assisted catheter
5951929, Dec 12 1995 Jomed GmbH Method for forming a catheter having overlapping welds
5957893, Nov 21 1996 Becton Dickinson & Co. Hard tip over-the needle catheter and method of manufacturing the same
5961511, May 31 1996 Boston Scientific Scimed, Inc Catheter having LCP reinforced distal portion
5961765, Sep 20 1994 Boston Scientific Corporation Method of making a catheter
5980505, Dec 12 1995 Abbott Laboratories Vascular Enterprises Limited; ABBOTT LABORATORIES VASCULAR ENTITLES LIMITED Overlapping welds for catheter constructions
5984909, Aug 13 1993 ST JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC Coronary sinus catheter
6001085, Aug 13 1993 ST JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC Coronary sinus catheter
6027477, Oct 27 1993 Boston Scientific Corporation Catheter with multilayer tube
6027487, Jun 24 1993 Radiance Medical Systems, Inc. Low profile infusion catheter
6030369, Jul 03 1997 Target Therapeutics, Inc Micro catheter shaft
6033366, Oct 14 1997 DATA SCIENCES INTERNATIONAL, INC Pressure measurement device
6036682, Dec 02 1997 Boston Scientific Scimed, Inc Catheter having a plurality of integral radiopaque bands
6048338, Oct 15 1997 Boston Scientific Scimed, Inc Catheter with spiral cut transition member
6053904, Apr 05 1996 SCRIBNER, ROBERT M ; BROWNE, KEVIN F Thin wall catheter introducer system
6077258, Oct 03 1997 Boston Scientific Scimed, Inc Braided angiography catheter having full length radiopacity and controlled flexibility
6086556, May 24 1996 Boston Scientific Scimed, Inc Medical device balloons containing thermoplastic elastomers
6103037, Dec 12 1995 Abbott Laboratories Vascular Enterprises Limited; ABBOTT LABORATORIES VASCULAR ENTITLES LIMITED Method for making a catheter having overlapping welds
6106510, May 28 1998 Medtronic, Inc.; MEDTRONICS, INC Extruded guide catheter shaft with bump extrusion soft distal segment
6113579, Mar 04 1998 Boston Scientific Scimed, Inc Catheter tip designs and methods for improved stent crossing
6126650, Jun 30 1998 Codman & Shurtleff, Inc Flow directed catheter having radiopaque strain relief segment
6132824, Sep 25 1989 SciMed Life Systems, INC; Boston Scientific Scimed, Inc Multilayer catheter balloon
6135111, Aug 31 1998 General Electric Company Tracheostomy tube with removable inner cannula
6136258, Apr 26 1991 Boston Scientific Scimed, Inc Method of forming a co-extruded balloon for medical purposes
6165166, Apr 25 1997 SciMed Life Systems, INC; Boston Scientific Scimed, Inc Trilayer, extruded medical tubing and medical devices incorporating such tubing
6168588, Dec 12 1995 Abbott Laboratories Vascular Enterprises Limited; ABBOTT LABORATORIES VASCULAR ENTITLES LIMITED Overlapping welds for catheter constructions
6171295, Jan 20 1999 Boston Scientific Scimed, Inc Intravascular catheter with composite reinforcement
6193705, Oct 28 1998 Boston Scientific Scimed, Inc Flow assisted catheter
6197015, Dec 09 1998 ABBOTT LABORATORIES VASCULAR ENTITLES LIMITED; Abbott Laboratories Vascular Enterprises Limited Angiography catheter with sections having different mechanical properties
6264630, Dec 23 1998 Boston Scientific Scimed, Inc Balloon catheter having an oscillating tip configuration
6296615, Mar 05 1999 CERBERUS BUSINESS FINANCE, LLC, AS COLLATERAL AGENT Catheter with physiological sensor
6319228, Apr 26 1996 Boston Scientific Corporation Multilayer interventional catheter
6379308, Oct 14 1997 DATA SCIENCES INTERNATIONAL, INC Pressure measurement device
6402720, Dec 22 1997 CARDINAL HEALTH SWITZERLAND 515 GMBH Balloon catheter with elongated flexible tip
6409674, Sep 24 1998 Pacesetter, Inc Implantable sensor with wireless communication
6464683, Apr 25 1997 SciMed Life Systems, INC; Boston Scientific Scimed, Inc Trilayer, extruded medical tubing and medical devices incorporating such tubbing
6471673, Oct 27 1993 VIDGOP, NELYA Catheter with multilayer tube
6475209, Oct 15 1997 Boston Scientific Scimed, Inc Catheter with spiral cut transition member
6482348, Apr 26 1991 Boston Scientific Scimed, Inc Method of forming a co-extruded balloon for medical purposes
6500285, Aug 23 1999 Boston Scientific Scimed, Inc Method of making a catheter having interlocking ribbed bond regions
6508805, Jan 20 1999 SciMed Life Systems, Inc. Intravascular catheter with composite reinforcement
6517515, Mar 04 1998 Boston Scientific Scimed, Inc Catheter having variable size guide wire lumen
6575959, Dec 27 1999 STRYKER EUROPEAN HOLDINGS III, LLC Catheter incorporating an insert molded hub and method of manufacturing
6579221, May 31 2001 Advanced Cardiovascular Systems, INC Proximal catheter shaft design and catheters incorporating the proximal shaft design
6591472, Dec 08 1998 Medtronic, Inc. Multiple segment catheter and method of fabrication
6623504, Dec 08 2000 Boston Scientific Scimed, Inc Balloon catheter with radiopaque distal tip
6648874, Feb 28 2000 Boston Scientific Scimed, Inc Guide catheter with lubricious inner liner
6652507, Jul 03 2001 Boston Scientific Scimed, Inc Intravascular catheter having multi-layered tip
6659959, Mar 05 1999 CERBERUS BUSINESS FINANCE, LLC, AS COLLATERAL AGENT Catheter with physiological sensor
6659977, Oct 27 1993 Boston Scientific Corporation Multilayer interventional catheter
6673291, May 01 1998 Smiths Group PLC Methods of manufacturing medico-surgical tubes
6685679, Dec 06 2000 Boston Scientific Scimed, Inc Interlocking metal shaft
6709429, Jan 19 2000 Boston Scientific Scimed, Inc Intravascular catheter with multiple axial fibers
6866660, Jan 20 1999 SciMed Life Systems, Inc. Intravascular catheter with composite reinforcement
6887220, Sep 12 2002 W L GORE & ASSOCIATES, INC Catheter having a compliant member configured to regulate aspiration rates
6896842, Oct 01 1993 Boston Scientific Scimed, Inc Medical device balloons containing thermoplastic elastomers
6942654, Jan 19 2000 Boston Scientific Scimed, Inc Intravascular catheter with axial member
6951675, Jan 27 2003 Boston Scientific Scimed, Inc Multilayer balloon catheter
6960187, Sep 20 1994 Schneider GmbH Catheter with multilayer tube
7025727, Oct 14 1997 DATA SCIENCES INTERNATIONAL, INC Pressure measurement device
7115183, Oct 15 1997 Boston Scientific Scimed, Inc Catheter with spiral cut transition member
7147604, Aug 07 2002 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II High Q factor sensor
7201763, Oct 24 2001 Boston Scientific Scimed, Inc Distal balloon waist material relief and method of manufacture
7245117, Nov 01 2004 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Communicating with implanted wireless sensor
7322988, Jan 17 2003 Boston Scientific Scimed, Inc Methods of forming catheters with soft distal tips
7347822, Oct 14 1997 DATA SCIENCES INTERNATIONAL, INC Pressure measurement device
7425200, Sep 24 1998 Pacesetter, Inc Implantable sensor with wireless communication
7466120, Nov 01 2004 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Communicating with an implanted wireless sensor
7481771, Jan 22 2002 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Implantable wireless sensor for pressure measurement within the heart
7481774, Mar 05 1999 DATA SCIENCES INTERNATIONAL, INC Catheter with physiological sensor
7485108, Apr 25 1997 Boston Scientific Corporation Multilayer interventional catheter
7488339, Oct 21 2002 Boston Scientific Scimed, Inc Multilayer medical device
7550978, Nov 01 2004 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Communicating with an implanted wireless sensor
7556634, Sep 19 2001 Advanced Cardiovascular Systems, Inc. Catheter with a multilayered shaft section having a polyimide layer
7574792, Sep 16 2003 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Method of manufacturing an implantable wireless sensor
7585289, Apr 26 1991 Boston Scientific Scimed, Inc. Co-extruded medical balloon
7597830, Jul 09 2003 Boston Scientific Scimed, Inc Method of forming catheter distal tip
7621036, Jun 21 2005 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Method of manufacturing implantable wireless sensor for in vivo pressure measurement
7635347, Oct 27 1993 Schneider (Europe) A.G. Catheter with multilayer tube
7647836, Feb 10 2005 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Hermetic chamber with electrical feedthroughs
7658196, Feb 24 2005 Ethicon Endo-Surgery, Inc System and method for determining implanted device orientation
7662144, Jun 22 2004 Boston Scientific Scimed, Inc Catheter shaft with improved manifold bond
7662653, Feb 10 2005 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Method of manufacturing a hermetic chamber with electrical feedthroughs
7699059, Jan 22 2002 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Implantable wireless sensor
7704245, Apr 14 2003 Cook Medical Technologies LLC Large diameter delivery catheter/sheath
7713047, Jan 27 2003 Boston Scientific Scimed, Inc. Extrusion apparatus for making multilayer articles
7744574, Dec 16 2004 Boston Scientific Scimed, Inc Catheter tip to reduce wire lock
7744586, Oct 15 1997 Boston Scientific Scimed, Inc. Catheter with spiral cut transition member
7775215, Feb 24 2005 Ethicon Endo-Surgery, Inc System and method for determining implanted device positioning and obtaining pressure data
7775966, Feb 24 2005 Ethicon Endo-Surgery, Inc Non-invasive pressure measurement in a fluid adjustable restrictive device
7781038, Oct 01 1993 Boston Scientific Scimed, Inc Medical device balloons containing thermoplastic elastomers
7815599, Dec 10 2004 Boston Scientific Scimed, Inc Catheter having an ultra soft tip and methods for making the same
7815625, Oct 23 1998 Boston Scientific Scimed, Inc. Catheter having improved bonding region
7839153, Nov 01 2004 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Communicating with an implanted wireless sensor
7844342, Feb 07 2008 Ethicon Endo-Surgery, Inc Powering implantable restriction systems using light
7854172, Feb 17 2009 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Hermetic chamber with electrical feedthroughs
7906066, Jun 30 2006 ABBOTT CARDIOVASCULAR SYSTEMS INC Method of making a balloon catheter shaft having high strength and flexibility
7927270, Feb 24 2005 Ethicon Endo-Surgery, Inc External mechanical pressure sensor for gastric band pressure measurements
7932732, Nov 01 2004 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Preventing a false lock in a phase lock loop
7942849, Oct 27 1993 Schneider GmbH Catheter with multilayer tube
7947059, Mar 02 2000 Boston Scientific Scimed, Inc Multilayer medical device
7968038, Apr 14 2003 Cook Medical Technologies LLC Large diameter delivery catheter/sheath
7985214, Jan 20 1999 Boston Scientific Scimed, Inc. Intravascular catheter with composite reinforcement
8002746, Mar 07 2005 Erskine Medical LLC Winged needle with needle shield
8016744, Feb 24 2005 Ethicon Endo-Surgery, Inc External pressure-based gastric band adjustment system and method
8016745, Feb 24 2005 Ethicon Endo-Surgery, Inc. Monitoring of a food intake restriction device
8021307, Mar 03 2005 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Apparatus and method for sensor deployment and fixation
8034065, Feb 26 2008 Ethicon Endo-Surgery, Inc Controlling pressure in adjustable restriction devices
8057492, Feb 12 2008 Ethicon Endo-Surgery, Inc Automatically adjusting band system with MEMS pump
8066629, Feb 24 2005 Ethicon Endo-Surgery, Inc Apparatus for adjustment and sensing of gastric band pressure
8066666, Apr 26 1996 Boston Scientific Corporation Multilayer interventional catheter
8100870, Dec 14 2007 ETHICON-ENDO SURGERY, INC Adjustable height gastric restriction devices and methods
8114345, Feb 08 2008 Ethicon Endo-Surgery, Inc System and method of sterilizing an implantable medical device
8118749, Mar 03 2005 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Apparatus and method for sensor deployment and fixation
8142452, Dec 27 2007 Ethicon Endo-Surgery, Inc Controlling pressure in adjustable restriction devices
8152710, Apr 06 2006 Ethicon Endo-Surgery, Inc Physiological parameter analysis for an implantable restriction device and a data logger
8187162, Mar 06 2008 Ethicon Endo-Surgery, Inc Reorientation port
8187163, Dec 10 2007 Ethicon Endo-Surgery, Inc Methods for implanting a gastric restriction device
8192350, Jan 28 2008 ETHICON-ENDO SURGERY, INC Methods and devices for measuring impedance in a gastric restriction system
8206372, Oct 15 1997 Boston Scientific Scimed, Inc. Catheter with spiral cut transition member
8216498, Sep 10 2008 Boston Scientific Scimed, Inc. Catheter having a coextruded fluoropolymer layer
8221439, Feb 07 2008 Ethicon Endo-Surgery, Inc Powering implantable restriction systems using kinetic motion
8231374, Jan 27 2003 Boston Scientific Scimed, Inc. Extrusion apparatus for making multilayer articles
8233995, Mar 06 2008 Ethicon Endo-Surgery, Inc System and method of aligning an implantable antenna
8237451, Nov 01 2004 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Communicating with an implanted wireless sensor
8257343, Jun 22 2004 Boston Scientific Scimed, Inc Catheter shaft with improved manifold bond
8292874, Oct 23 1998 Boston Scientific Scimed, Inc. Catheter having improved bonding region
8337389, Jan 28 2008 Ethicon Endo-Surgery, Inc Methods and devices for diagnosing performance of a gastric restriction system
8377079, Dec 27 2007 Ethicon Endo-Surgery, Inc Constant force mechanisms for regulating restriction devices
8382738, Jun 30 2006 Abbott Cardiovascular Systems, Inc. Balloon catheter tapered shaft having high strength and flexibility and method of making same
8388602, Jun 30 2006 Abbott Cardiovascular Systems Inc. Balloon catheter shaft having high strength and flexibility
8403885, Dec 17 2007 ABBOTT CARDIOVASCULAR SYSTEMS INC Catheter having transitioning shaft segments
8444608, Nov 26 2008 Abbott Cardivascular Systems, Inc. Robust catheter tubing
8591395, Jan 28 2008 Ethicon Endo-Surgery, Inc Gastric restriction device data handling devices and methods
8591532, Feb 12 2008 Ethicon Endo-Surgery, Inc Automatically adjusting band system
8603041, Mar 07 2005 Erskine Medical LLC Needle shielding device
8613722, Nov 26 2008 Abbott Cardiovascular Systems, Inc. Robust multi-layer balloon
8636717, Oct 23 1998 Boston Scientific Scimed, Inc. Catheter having improved bonding region
8657782, Dec 17 2007 Abbott Cardiovascular Systems, Inc. Catheter having transitioning shaft segments
8684963, Jul 05 2012 Abbott Cardiovascular Systems Inc. Catheter with a dual lumen monolithic shaft
8721624, Jun 30 2006 Abbott Cardiovascular Systems Inc. Balloon catheter shaft having high strength and flexibility
8858529, Jun 22 2004 Boston Scientific Scimed, Inc. Catheter shaft with improved manifold bond
8870742, Apr 06 2006 Ethicon Endo-Surgery, Inc GUI for an implantable restriction device and a data logger
8896324, Sep 16 2003 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II System, apparatus, and method for in-vivo assessment of relative position of an implant
8968240, Mar 07 2005 Erskine Medical LLC Method of making a needle shielding device
8973239, Dec 10 2004 Boston Scientific Scimed, Inc. Catheter having an ultra soft tip and methods for making the same
9017308, May 21 2002 Boston Scientific Scimed, Inc Insert molded hub and strain relief
9056190, Jun 30 2006 Abbott Cardiovascular Systems Inc. Balloon catheter tapered shaft having high strength and flexibility and method of making same
9078563, Jun 21 2005 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Method of manufacturing implantable wireless sensor for in vivo pressure measurement
9174029, Mar 07 2005 Erskine Medical LLC Catheter introducer with needle shield
9180277, Dec 02 2010 Erskine Medical LLC Release mechanism for use with needle shielding devices
9205223, Jun 30 2006 ABBOTT CARDIOVASCULAR SYSTEMS INC Balloon catheter shaft having high strength and flexibility
9216274, Dec 17 2007 Abbott Cardiovascular Systems Inc. Catheter having transitioning shaft segments
9238121, Jun 22 2004 Boston Scientific Scimed, Inc. Catheter shaft with improved manifold bond
9265428, Sep 16 2003 ST JUDE MEDICAL LUXEMBOURG HOLDINGS II S A R L SJM LUX II Implantable wireless sensor
9278195, Dec 02 2010 Erskine Medical LLC Needle shield assembly with hub engagement member for needle device
9345853, Dec 10 2010 TEKNOR APEX COMPANY Tube assembly and method for making the assembly
9381325, Nov 26 2008 ABBOTT CADIOVASCULAR SYSTEMS, INC. Robust catheter tubing
9408632, Apr 07 2011 Erskine Medical LLC Needle shielding device
9468744, Dec 17 2007 Abbott Cardiovascular Systems Inc. Catheter having transitioning shaft segments
9539368, Nov 26 2008 Abbott Cardiovascular Systems, Inc. Robust catheter tubing
9669196, Nov 26 2008 Abbott Cardiovascular Systems, Inc. Robust multi-layer balloon
9707380, Jul 05 2012 Abbott Cardiovascular Systems Inc. Catheter with a dual lumen monolithic shaft
9855400, Sep 19 2001 Abbott Cardiovascular Systems, Inc. Catheter with a multilayered shaft section having a polyimide layer
9968713, Jun 30 2006 Abbott Cardiovascular Systems Inc. Balloon catheter shaft having high strength and flexibility
Patent Priority Assignee Title
2810424,
2934514,
3336918,
3485234,
3561493,
3618614,
3911927,
3924632,
4066743, Jun 21 1976 MALLINCKRODT MEDICAL, INC , A DE CORP X-ray contrast agents
4125599, Aug 19 1976 Mallinckrodt, Inc. X-ray contrast agents
4160015, Aug 19 1976 MALLINCKRODT MEDICAL, INC , A DE CORP 2,4,6-Triiodobenzoic acid derivatives and their use as x-ray contrast agents
4182787, Jun 19 1978 General Electric Company Optically transparent, radiographically opaque tubing
4191185, Sep 06 1977 Johnson & Johnson Catheter assembly
4211741, Apr 07 1977 SUNLITE PLASTICS, INC Extrusion process for laminated medical-surgical tubing
4250072, Aug 06 1976 BECTON, DICKINSON AND COMPANY, A NJ CORP Radiopaque polyurethane resin compositions
4282876, Aug 06 1976 BECTON, DICKINSON AND COMPANY, A NJ CORP Radiopaque polyurethane resin compositions
4283447, Aug 06 1976 BECTON, DICKINSON AND COMPANY, A NJ CORP Radiopaque polyurethane resin compositions
4306562, Dec 01 1978 Cook, Inc. Tear apart cannula
4430083, Mar 06 1981 Edwards Lifesciences Corporation Infusion catheter
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 29 1984PANDE, GYAN S CORDIS CORPORATION, A FL CORP ASSIGNMENT OF ASSIGNORS INTEREST 0042940891 pdf
Mar 08 1984Cordis Corporation(assignment on the face of the patent)
Date Maintenance Fee Events
Nov 20 1989M173: Payment of Maintenance Fee, 4th Year, PL 97-247.
Nov 22 1993M184: Payment of Maintenance Fee, 8th Year, Large Entity.
May 26 1994ASPN: Payor Number Assigned.
Nov 21 1997M185: Payment of Maintenance Fee, 12th Year, Large Entity.
Dec 10 1997ASPN: Payor Number Assigned.
Dec 10 1997RMPN: Payer Number De-assigned.


Date Maintenance Schedule
Jun 24 19894 years fee payment window open
Dec 24 19896 months grace period start (w surcharge)
Jun 24 1990patent expiry (for year 4)
Jun 24 19922 years to revive unintentionally abandoned end. (for year 4)
Jun 24 19938 years fee payment window open
Dec 24 19936 months grace period start (w surcharge)
Jun 24 1994patent expiry (for year 8)
Jun 24 19962 years to revive unintentionally abandoned end. (for year 8)
Jun 24 199712 years fee payment window open
Dec 24 19976 months grace period start (w surcharge)
Jun 24 1998patent expiry (for year 12)
Jun 24 20002 years to revive unintentionally abandoned end. (for year 12)